Report on the electrical treatment of milk, with details of experimental enquiry and apparatus / [J.M. Beattie].

  • J. M. Beattie
Date:
1914
Catalogue details

Licence: Public Domain Mark

Credit: Report on the electrical treatment of milk, with details of experimental enquiry and apparatus / [J.M. Beattie]. Source: Wellcome Collection.

    14/38 page 14
    1k: The following ‘table gives the results of the examination oh 15 successive days of the milk before and after treatment. Control sample Treated mi,k (untreated milk) I'-e,c. 1 o.6. Date. Bacteria Bacteria Bacteria Bacteria present grown on present grown on (grown on neutral red (grown on neutral red agar at 37° C.).| agar at 37° C. | agar at 37° C.).) agar at 37° C, (B. coli, &e.) (B. coli, &e.) BOD {04 ay aed raed es luns 777,000 1,140 642 0 a Tih | Ute isa caw et eta vs op uncountable 180 327 0 RBS Be hase deter eas 125,400 1,320 53 0 DG/A PEs, Dees seapkbicses 158,400 29 | 189 0 Sova AM anal 568,000 656 316 0 AVG MTL Rind me ia Rhy 567,600 gl2 168 0 ONT ee ae a ES 80,000 600 100 0 oe ee | 97,500 798 16. 0 BIB bacin sts se inp tvs oy Ov 126,500 105 22 0 C2] Ua aa idais hh vilsivion 35,400 _ 436 0 0 he eS a Br 96,400 25 87 0. Lee Bliss nak cotes s vy esa 152,460 Wal 130 | 0 RRP RALGS sy vcivusnstsindy 112,200 676 75 | 0 TB 27 D4 aitecumretes 19,840 96 348 0 PAVZIT4 aly Viltahs ht 950,000 432 49 0 The bacteria which grow on agar at 387° C. give a fairly accurate representation of the total number of. bacteria present in any sample, while those which grow on neutral red agar are B. coli, and its allies mainly derived from manurial contamination, &c., and the main milk-souring organisms. It will be seen then from this table that B. coli and the ordinary milk-souring organisms have been invariably absent from the treated milk, and that the average percentage reduction of total bacteria
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